ARS Progetti
- http://www.arsprogetti.com
- Ambiente Risorse e Sviluppo (Environment, Resources and Development) is a consulting firm working all over the world.
Arbogast Paint Analysis
- http://www.paintanalysis.biz/
- Provides scientific analysis of historic finishes for the restoration of historic structures ranging from state capitol buildings to archaeological sites.
Architectural Artisans
- http://www.architecturalartisans.com/
- A studio crafting hand-carved architectural works in wood and marble for residential, commercial and historical interiors. This firm based in Valencia, California, works across the US.
Barn Histories
- http://barnhistories.com
- Provides documentation of historic barns and outbuildings in the U.S. that includes condition reports, historical narratives, physical descriptions, architectural documentation, historic site plans, and State and National Register nominations.
Building Conservation Associates
- http://www.bcausa.com/
- A private consulting and research firm practicing preservation design, conditions assessments, materials science, and historic building documentation. Projects are in the northeastern United States.
EHT Traceries, Inc
- http://www.traceries.com
- A women-owned research and consulting firm specializing in architectural history and historic preservation, based in Washington, DC.
Hockley & Dawson
- http://www.hockleyanddawson.co.uk/
- Consulting engineers who specialise in the sensitive repair and conservation of historic buildings and structures. Portfolio includes projects throughout the United Kingdom.
Induni Conservation
- http://www.induni.net
- Bruce Induni offers consultancy in the UK on all aspects of historic stonework and mortar and teaches short courses on conservation. He describes his services, philosophy and experience.
J. Ballard Carpentry
- http://www.jballardcarpentry.com/
- New England business specializing in historic preservation. Projects include historically-sensitive additions, historic barn restoration, and custom millwork and woodworking.
Office of Bauforschung
- http://www.bauforschung-tirol.com
- A firm documenting and researching historical monuments in the Austrian Tyrol, as well as advising on and supervising restoration. Team, projects. In English, German and Italian.
Parasmoon
- http://www.parasmoon.com/
- This company in Iran offers preservation and restoration of historic buildings, objects, books and documents. Activities, portfolio, services, facilities.
Robert Silman Associates PC
- http://www.rsapc.com/
- Structural engineers specialize in historic preservation, including large federal projects in the United States. Includes work on masonry, timber, and cast concrete structures.
Tutto Sesto
- http://www.tuttosesto.it
- Refurbishment of arches and vaulted roofs for houses, taverns, basements and churches. An Italian firm which works across the world.